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北斗导航终端S频段单级低噪声放大器设计

Design of a three level LNA for S band active antenna used in Beidou navigation terminals
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摘要 设计了一种工作于北斗导航终端S频段有源天线的单级低噪声放大器(LNA)。电路结构简洁、噪声低、体积小,全面考虑了回波损耗、噪声系数、增益、稳定性等指标。在利用ADS软件反复仿真优化的基础上,设计制作了电路实物。实测表明所设计的LNA在S频段处的增益为10.95 dB,噪声系数最大仅为1.075 dB,输入输出回波损耗均在-10 dB以下,反向隔离度为-25.681 dB,适用于北斗导航终端S频段有源天线的第一级信号放大。 A single level Low Noise Amplifier （LNA） is designed for S band active antenna which can be used in Beidou Navigation terminals. The circuit structure of LNA is simple with small bulk and low noise. The return loss, noise coefficients, gain and stability are all considered in the design. By using ADS for optimization the circuit, the solid circuit is fabricated for the LNA and tested. The test results show that the LNA＇s gain is 10.95dB for S band; the maxim noise factor is only 1. 075dB;the return loss of input and output are all under - 10dB, and the reverse isolation is -25. 681dB. The LNA is fit for S band active antenna to carry out first level signal amplifying in Beidou Navigation terminals.
作者 杨曙辉 王旸 康劲 陈迎潮 张羽
机构地区 北京信息科技大学信息与通信工程学院 南卡罗来纳大学电气工程系
出处 《北京信息科技大学学报（自然科学版）》 2013年第5期1-6,共6页 Journal of Beijing Information Science and Technology University
基金 国家自然科学基金重点项目(60833002) 国家自然科学基金面上项目(61171039)
关键词 北斗导航 全球定位系统 S频段 低噪声放大器 有源天线 回波损耗 Beidou Navigation global positioning system S frequency band low noise amplifier （LNA） active antenna return loss
分类号 TN43 [电子电信—微电子学与固体电子学]
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参考文献15

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北京信息科技大学学报（自然科学版）
2013年 第5期

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